USN-5160-1 (UBUNTU-CVE-2021-36370)
Vulnerability from osv_ubuntu – Published: 2022-08-09 11:44 – Updated: 2026-06-29 10:52 – Source website
VLAI
Summary
mc vulnerability
Details
It was discovered that Midnight Commander would not check server fingerprints when establishing an SFTP connection. If a remote attacker were able to intercept communications this flaw could be exploited to impersonate the SFTP server.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-36370",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "mc",
"binary_version": "3:4.8.11-1ubuntu0.1~esm1"
},
{
"binary_name": "mc-data",
"binary_version": "3:4.8.11-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "mc",
"purl": "pkg:deb/ubuntu/mc@3:4.8.11-1ubuntu0.1~esm1?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:4.8.11-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:4.8.5-1",
"3:4.8.10-4",
"3:4.8.11-1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-36370",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "mc",
"binary_version": "3:4.8.15-2ubuntu0.1~esm1"
},
{
"binary_name": "mc-data",
"binary_version": "3:4.8.15-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "mc",
"purl": "pkg:deb/ubuntu/mc@3:4.8.15-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:4.8.15-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:4.8.13-3",
"3:4.8.15-2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-36370",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "mc",
"binary_version": "3:4.8.19-1ubuntu0.1~esm1"
},
{
"binary_name": "mc-data",
"binary_version": "3:4.8.19-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "mc",
"purl": "pkg:deb/ubuntu/mc@3:4.8.19-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:4.8.19-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:4.8.19-1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-36370",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "mc",
"binary_version": "3:4.8.24-2ubuntu1+esm1"
},
{
"binary_name": "mc-data",
"binary_version": "3:4.8.24-2ubuntu1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "mc",
"purl": "pkg:deb/ubuntu/mc@3:4.8.24-2ubuntu1+esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:4.8.24-2ubuntu1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:4.8.22-1build1",
"3:4.8.23-1",
"3:4.8.24-2ubuntu1"
]
}
],
"aliases": [],
"details": "It was discovered that Midnight Commander would not check server fingerprints\nwhen establishing an SFTP connection. If a remote attacker were able to intercept\ncommunications this flaw could be exploited to impersonate the SFTP server.\n",
"id": "USN-5160-1",
"modified": "2026-06-29T10:52:52Z",
"published": "2022-08-09T11:44:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5160-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-36370"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "mc vulnerability",
"upstream": [
"UBUNTU-CVE-2021-36370"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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